Instrument illumination system

Details Instrument illumination system Instrument illumination system

1988-02-11

1989-02-21

Scott, Samuel

Illumination

Illuminated scale or dial

Edge illuminated modifier or light rod/pipe

362 30, 116287, 116DIG5, G01D 1128

Patent

active

048070904

ABSTRACT:
An instrument with an illumination ring that edge-lights an opaque dial face with increased light flow by augmenting the conductivity of both the light receiving portion of the ring and a bevel for deflecting light laterally across the face. The increased light flow is accomplished by an extended annular wall portion spaced from the edge of the dial face.

REFERENCES:
patent: 2606277 (1952-08-01), Triplett
patent: 2837052 (1958-06-01), Viret
patent: 3257748 (1966-06-01), Hardesty
patent: 4004546 (1977-01-01), Harland
patent: 4581683 (1986-09-01), Reiter et al.

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